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weeeeeb [17]
4 years ago
13

It a math question

Mathematics
1 answer:
tatyana61 [14]4 years ago
7 0

\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill&\$75\\ P=\textit{original amount deposited}\dotfill & \$450\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &3 \end{cases} \\\\\\ 75=(450)r(3)\implies \cfrac{75}{(450)(3)}=r\implies \cfrac{1}{18}=r\implies 0.0\overline{55}=r \\\\\\ \stackrel{\textit{converting it to percentage}}{r\% \approx 0.055\cdot 100}\implies r\approx \stackrel{\%}{5.5}

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Please help me with this trigonometry question. Brainliest available.
faltersainse [42]
Considering the angle a by cosine rule
11^2 =7 ^2 +15^2 - 2(7)(15)cos(a)
When you do the maths,
Cos(a) =153/210 =0.729
a= cos inverse of 0.729
a=43 degrees


Considering angle b
7^2=15^2 +11^2 -2(11)(15) cos(b)
This will result in cos(b) =297/330=0.9
b= cos inverse of 0.9 = 25.8 degrees


Considering angle c
15^2=7^2 +11^2 - 2(11)(7) cos(c)
Cos(c) will be = -55/154 = -0.357
c= cos inverse of -0.357=110.9

Comparing the angles a,b and c,
C is the largest size in the triangle with an angle of 110.9 degrees

Am I right please ??
5 0
2 years ago
A whale costs $14700 and depreciates in value by 8% per year. When will the whale be worth $100
sammy [17]

Answer:

x = 60

Step-by-step explanation:

The question is asking

$14,700 * (1 - 8%)^x = $100

$14,700 * (1 - 0.08)^x = $100

$14,700 * (0.92)^x = $100

(0.92)^x = $100/$14,700

log(0.92^x) = log($100/$14,700)

x * log(0.92) = log(0.0068027)

x = log(0.0068027)/log(0.92)

x = 59.85

Since this question is asking in terms of years, we always round up (in this case to 60), as it won't fully be worth $100 by the beginning of the 59th year.

3 0
3 years ago
How multiplied whole number with fraction
Fofino [41]

Search it up and you shall find an answer believe me it is there

3 0
4 years ago
Read 2 more answers
ANSWER PLEASE..................
Lena [83]
The answer is 74.32 y ok it welcome
5 0
3 years ago
A circular tablecloth has a radius of 3.5 feet. Lyle is sewing a piece of ribbon around the edge of the tablecloth. If Lyle has
HACTEHA [7]

Answer:

22ft

Step-by-step explanation:

Length or ribbon = Circumference of the circle

C = 2πr

C = 2π(3.5)

C = 21.99

4 0
3 years ago
Read 2 more answers
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